"In the cosmic evolutionary laboratories mind is always dominant over matter, and spirit is ever correlated with mind. Failure of these diverse endowments to synchronize and co-ordinate may cause time delays, but if the individual really knows God and desires to find him and become like him, then survival is assured regardless of the handicaps of time. Physical status may handicap mind, and mental perversity may delay spiritual attainment, but none of these obstacles can defeat the whole-souled choice of will."
[65:8.5]

"The optimum stabilization of national population enhances culture and prevents war. And it is a wise nation which knows when to cease growing. ... But the continent richest in natural deposits and the most advanced mechanical equipment will make little progress if the intelligence of its people is on the decline. Knowledge can be had by education, but wisdom, which is indispensable to true culture, can be secured only through experience and by men and women who are innately intelligent. Such a people are able to learn from experience; they may become truly wise."
[81:6.12]