Refuse to let the thought of death bother you: nothing is grim when we have escaped that fear.

It is one thing to remember, another to know. To remember is to safeguard something entrusted to the memory. But to know is to make each thing one's own, not depend on the text and always to look back to the teacher. "Zeno said this, Cleanthes said this." Let there be space between you and the book.

The mind is never right but when it is at peace within itself; the soul is in heaven even while it is in the flesh, if it be purged of its natural corruptions, and taken up with divine thoughts, and contemplations.

The physician cannot prescribe by letter, he must feel the pulse.

Know thyself; this is the great object.

He who tenders doubtful safety to those in trouble refuses it.

To rule yourself is the ultimate power