From Theosophy's Sacred Teachings: Gems of the East - A Birthday Book of Precepts and Axioms, Part 2 of 2

Neither by the eyes, nor by spirit, nor by the sensuous organs, nor by austerity, nor by sacrifices, can we see Brahma. Only the pure, by the light of wisdom and meditation, can see the pure Deity. By perfection in study and meditation the Supreme Spirit becomes manifest; study is one eye to behold it, and meditation is the other. Alas! We reap what seed we sow; the hands that smite us are our own. Thoughts alone cause the round of rebirths in this world; let a man strive to purify his thoughts, what a man thinks, that he is: this is the old secret.