For the things of this world cannot be made known ...

Reasoning draws a conclusion, but does not make the conclusion certain, unless the mind discovers it by the path of experience.

All science requires mathematics. The knowledge of mathematical things is almost innate in us. This is the easiest of sciences, a fact which is obvious in that no one's brain rejects it for laymen and people who are utterly illiterate know how to count and reckon.

Argument is conclusive, but it does not remove doubt, so that the mind may rest in the sure knowledge of the truth, unless it finds it by the method of experiment.

The really frightening thing about middle age is the knowledge that you'll grow out of it.

If repression has indeed been the fundamental link between power, knowledge, and sexuality since the classical age, it stands to reason that we will not be able to free ourselves from it except at a considerable cost.

We are approaching a new age of synthesis. Knowledge cannot be merely a degree or a skill... it demands a broader vision, capabilities in critical thinking and logical deduction without which we cannot have constructive progress.

We live in an age of instant knowledge. And there's almost a sense of entitlement to that.