Happiness is man's greatest aim in life. Tranquility and rationality are the cornerstones of happiness.
There is but one way to tranquility of mind and happiness, and that is to account no external things thine own, but to commit all to God.
Virture offers the only path in this life that leads to tranquility.
Learning is experience understood in tranquility.
Calm's not life's crown, though calm is well.
There is no such thing as perpetual tranquility of mind while we live here.
Tranquility is the old man's milk.
It did not seem as if a prop were withdrawn, but rather as if a motive were gone: it was not the power to be tranquil which had failed me, but the reason for tranquility was no more.
It is in vain to say human beings ought to be satisfied with tranquility: they must have action; and they will make it if they cannot find it.
There will be calmness, tranquility, when one is free from external objects and is not perturbed.