Mental Quotes (page 21)
The fact to be remembered in considering... contact with [the] thought currents of others, is that we may decide the character of the thoughts that we shall receive by carefully observing the rule to think only along such lines as may be worthy of us, and which may tend to our betterment, strength, and advancement. In other words, we have the power to select our mental company.
Edward Walker
It is a terrible error to let any natural impulse, physical or mental, stagnate. Crush it out, if you will, and be done with it; or fulfil it, and get it out of the system; but do not allow it to remain there and putrefy. The suppression of the normal sex instinct, for example, is responsible for a thousand ills. In Puritan countries one inevitably finds a morbid preoccupation with sex coupled with every form of perversion and degeneracy.
Aleister Crowley
The baby looks at things all day without winking; that is because his eyes are not focused on any particular object. He goes without knowing where he is going, and stops without knowing what he is doing. He merges himself within the surroundings and moves along with it. These are the principles of mental hygiene.
Zhuangzi
I have heard of a man lost in the woods and dying of famine and exhaustion at the foot of a tree, whose loneliness was relieved by the grotesque visions with which, owing to bodily weakness, his diseased imagination surrounded him, and which he believed to be real. So also, owing to bodily and mental health and strength, we may be continually cheered by a like but more normal and natural society, and come to know that we are never alone.
Henry David Thoreau
...people don't want to believe the truth about themselves. They get some mental picture of themselves and then they devil the poor old body, trying to make it like the picture. When it won't obey-can't obey, of course-they are mad at it, and live in it as if it were an unsatisfactory house they were hoping to move out of.
Robertson Davies