Progress has not followed a straight ascending line, but a spiral
with rhythms of progress and retrogression, of evolution read more

Progress has not followed a straight ascending line, but a spiral
with rhythms of progress and retrogression, of evolution and
dissolution.

Those who work most for the world's advancement are the ones who demand least.

Those who work most for the world's advancement are the ones who demand least.

What we call "progress " is the exchange of one nuisance for
another nuisance.

What we call "progress " is the exchange of one nuisance for
another nuisance.

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less read more

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.

I have seen that Man moves over with each new generation into a
bigger body, more awful, more reverent read more

I have seen that Man moves over with each new generation into a
bigger body, more awful, more reverent and more free than he has
had before.

Not to go back is somewhat to advance, and men must walk, at least, before they dance.

Not to go back is somewhat to advance, and men must walk, at least, before they dance.

The reasonable man adapts himself to the world, but the unreasonable man tries to adapt the world to him--therefore, all read more

The reasonable man adapts himself to the world, but the unreasonable man tries to adapt the world to him--therefore, all progress depends upon the unreasonable man.

Progress is impossible without change, and those who cannot change their minds cannot change anything.

Progress is impossible without change, and those who cannot change their minds cannot change anything.

The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. read more

The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.