Text of the meditation
Confusion, suffering and spiritual darkness follow the thoughtless. The person who is afraid to think searchingly upon their opinions, and to reason critically upon their position, will have to develop moral courage before they can acquire discrimination. A person must be true to themselves, fearless with themselves, before they can perceive the pure principles of Truth, before they can receive the all-revealing Light of Truth.
The more Truth is inquired of, the brighter it shines; it cannot suffer under examination and analysis. The more error is questioned, the darker it grows; it cannot survive the entrance of pure and searching thought. To "prove all things" is to find the good and to throw away the evil.
Whoever reasons and meditates learns to discriminate; whoever discriminates discovers the eternally True. Harmony, blessedness and the Light of Truth attend upon the thoughtful.
James Allen (1864–1912), Book of Meditations for Every Day in the Year (1913) – public-domain text, gently modernised.
The original 1913 text is in the public domain.