The total mental efficiency of a man is the resultant of the working together of all his faculties. He is too complex a being for any one of them to have the casting vote. If any one of them do have the casting vote, it is more likely to be the strength of his desire and passion, the strength of the interest he takes in what is proposed. Concentration, memory, reasoning power, inventiveness, excellence of the senses, all are subsidiary to this.
William JamesMan, biologically considered ... is simply the most formidable of all beasts of prey, and, indeed, the only one that preys systematically on its own kind.
William JamesVoices of the glorified urge us onward. They who have passed from the semblances of time to the realities of eternity call upon us to advance. The rest that awaits us invites us forward. We do not pine for our rest before God wills it. We long for no inglorious rest. We are thankful rather for the invaluable training of difficulty, the loving discipline of danger and strife. Yet in the midst of it all the prospect of rest invites us heavenward. Through all, and above all, God cries, "Go forward!" "Come up higher!
William James