Charles Darwin

Without speculation there is no good and original observation.

Without speculation there is no good and original observation.

A man who dares to waste one hour of time has not discovered the value of life.

A man who dares to waste one hour of time has not discovered the value of life.

A man's friendships are one of the best measures of his worth.

A man's friendships are one of the best measures of his worth.

At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate, read more

At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate, and replace the savage races throughout the world

We must, however, acknowledge, as it seems to me, that man with all his noble qualities... still bears in his read more

We must, however, acknowledge, as it seems to me, that man with all his noble qualities... still bears in his bodily frame the indelible stamp of his lowly origin.