I romanced internally about early death till it was too late to die early.

His subject is the "Origin of Species," & not the origin of Organization; & it seems a needless mischief to have opened the latter speculation at all.

Readers are plentiful; thinkers are rare.

You had better live your best and act your best and think your best today; for today is the sure preparation for tomorrow and all the other tomorrows that follow.

It is hard to tell which is worse; the wide diffusion of things that are not true, or the suppression of things that are true.

Happiness consists in the full employment of our faculties in some pursuit.

It is my deliberate opinion that the one essential requisite of human welfare in all ways is scientific knowledge of human nature.