Money often costs too much, and power and pleasure are not cheap.

The days come and go but they say nothing, and if we do not use the gifts they bring, they carry them as silently away.

But the best read naturalist who lends an entire and devout attention to truth, will see that there remains much to learn of his relation to the world, and that it is not to be learned by any addition or subtraction or other comparison of known quantities, but is arrived at by untaught sallies of the spirit, by a continual self-recovery, and by entire humility.

Fear, when your friends say to you what you have done well, and say it through; but when they stand with uncertain timid looks of respect and half-dislike, and must suspend their judgement for years to come, you may begin to hope.

Many a man had taken the first step. With every additional step you enhance immensely the value of your first.

The world always had the same bankrupt look, to foregoing ages as to us.

Numbers serve to discipline rhetoric. Without them it is too easy to follow flights of fancy, to ignore the world as it is and to remold it nearer the heart's desire.