Be not penny-wise. Riches have wings. Sometimes they fly away of themselves, and sometimes they must be set flying to bring in more.

I have to hope that my instincts will do the right thing, because I can't erase what I have done. And if I drew something first, then my paintings would be illustrations of drawings.

Certainly man is of kin to the beasts by his body; and if he be not kin to God by his spirit, he is a base and ignoble creature.

Again there is another great and powerful cause why the sciences have made but little progress; which is this. It is not possible to run a course aright when the goal itself has not been rightly placed.

Observation and experiment for gathering material, induction and deduction for elaborating it: these are are only good intellectual tools.

He of whom many are afraid ought himself to fear many.

He that plots to be the only figure among ciphers [zeros], is the decay of the whole age.