Of all virtues and dignities of the mind, goodness is the greatest, being the character of the Deity; and without it, man is a busy, mischievous, wretched thing.

If a man's wit be wandering, let him study the mathematics.

Never any knowledge was delivered in the same order it was invented.

It was a high speech of Seneca that "The good things which belong to prosperity are to be wished, but the good things that belong to adversity are to be admired."

No pleasure is comparable to the standing upon the vantage-ground of truth.

Disciples do owe their masters only a temporary belief, and a suspension of their own judgment till they be fully instructed.

[Science is] the labor and handicraft of the mind.