Boldness is a child of ignorance

O life! An age to the miserable, a moment to the happy.

Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages. And yet the invention of young men, is more lively than that of old; and imaginations stream into their minds better, and, as it were, more divinely.

Many a man's strength is in opposition, and when he faileth, he grows out of use.

There arises from a bad and unapt formation of words a wonderful obstruction to the mind.

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

Aristotle... a mere bond-servant to his logic, thereby rendering it contentious and well nigh useless.