What we do not understand we do not possess.

Everything is hard before it is easy.

Happiness is a ball after which we run wherever it rolls, and we push it with our feet when it stops.

One never goes so far as when one doesn't know where one is going.

The few of understanding, vision rare, Who veiled not from the herd their hearts, but tried, Poor generous fools, to lay their feelings bare, Them have men always burnt and crucified.

Science has been seriously retarded by the study of what is not worth knowing and of what is not knowable.

Plunge boldly into the thick of life!