Don't think there are no crocodiles because the water is calm.

Don't think there are no crocodiles because the water is calm.

Disapproval is a very important factor in all progress. There has really never been any progress without it.

Disapproval is a very important factor in all progress. There has really never been any progress without it.

Society is like air; very high up, it is sublimated--too low down, a perfect choke-damp.

Society is like air; very high up, it is sublimated--too low down, a perfect choke-damp.

Under normal conditions the research scientist is not an innovator but a solver of puzzles, and the puzzles upon which read more

Under normal conditions the research scientist is not an innovator but a solver of puzzles, and the puzzles upon which he concentrates are just those which he believes can be both stated and solved within the existing scientific tradition.

What is the use of a house if you haven't got a tolerable planet to put it on?

What is the use of a house if you haven't got a tolerable planet to put it on?

A nation can survive its fools, and even the ambitious. But it cannot survive treason from within. An enemy at read more

A nation can survive its fools, and even the ambitious. But it cannot survive treason from within. An enemy at the gates is less formidable, for he is known and carries his banner openly. But the traitor moves amongst those within the gate freely, his sly whispers rustling through all the alleys, heard in the very halls of government itself. For the traitor appears not a traitor; he speaks in accents familiar to his victims, and he wears their face and their arguments, he appeals to the baseness that lies deep in the hearts of all men. He rots the soul of a nation, he works secretly and unknown in the night to undermine the pillars of the city, he infects the body politic so that it can no longer resist. A murderer is less to fear. The traitor is the plague.

Every man...should periodically be compelled to listen to opinions which are infuriating to him. To hear nothing but what is read more

Every man...should periodically be compelled to listen to opinions which are infuriating to him. To hear nothing but what is pleasing to one is to make a pillow of the mind.

When grubbing for necessities man is still an animal. He becomes uniquely human when he reaches out for the superfluous read more

When grubbing for necessities man is still an animal. He becomes uniquely human when he reaches out for the superfluous and extravagant.

The vigor of a mass movement stems from the propensity of its followers for united action and self-sacrifice. When we read more

The vigor of a mass movement stems from the propensity of its followers for united action and self-sacrifice. When we ascribe the success of a movement to its faith, doctrine, propaganda, leadership, ruthlessness and so on, we are but referring to instruments of unification and to means used to inculcate a readiness for self-sacrifice. It is perhaps impossible to understand the nature of a mass movement unless it is recognized that their chief preoccupation is to foster, perfect and perpetuate a facility for united action and self-sacrifice.