One of the greatest obstacles to mental progress is a lack of specific goals which are established in such a manner that they become a regular stairway of effort where one easy activity leads to another easy effort which, when continued over a period of time, allows the ascension of the mind from the simple to the complex and from the physical through the mental to the spiritual. –Kabalarian Teachings

When viewing or thinking a thought, always clarify it for the value of its logic and reason; divest it of imagination, mystery, and all falseness; see the clear intent, whether constructive or otherwise, and never compromise with illogicality; a statement is, or is not. See it for what it really is, and do not attempt to clothe it with personality; this is what so often leads to jumping to conclusions and self-pity. –Alfred J. Parker

Know that a wise man changes his mind; but a fool never. Be humble, and thus keep the door to wisdom always open. Ego is the greatest destroyer of potential thinkers. Be principled, just, and honest at all times; and peace, health, and success will follow you all the days of your life. –Alfred J. Parker

From the time of Kepler to that of Newton, and from Newton to Hartley, not only all things in external nature, but the subtlest mysteries of life and organization, and even of the intellect and moral being, were conjured within the magic circle of mathematical formulae. –Samuel Taylor Coleridge