Unhappy is the man or the nation which, when the divine moment arrives, is found sleeping or unprepared to use it, because the lamp has not been kept trimmed for the welcome and the ears are sealed to the call. But thrice woe to them who are strong and ready, yet waste the force or misuse the moment; for them is irreparable loss or a great destruction.
In the hour of God cleanse thy soul of all self-deceit and hypocrisy and vain self-flattering that thou mayst look straight into thy spirit and hear that which summons it. All insincerity of nature, once thy defence against the eye of the Master and the light of the ideal, becomes now a gap in thy armour and invites the blow. Even if thou conquer for the moment, it is the worse for thee, for the blow shall come afterwards and cast thee down in the midst of thy triumph. But being pure cast aside all fear; for the hour is often terrible, a fire and a whirlwind and a tempest, a treading of the winepress of the wrath of God; but he who can stand up in it on the truth of his purpose is he who shall stand; even though he fall, he shall rise again; even though he seem to pass on the wings of the wind, he shall return. Nor let worldly prudence whisper too closely in thy ear; for it is the hour of the unexpected.
Ref: Essays Divine and Human