That is the one cause of misery: we are attached, we are being caught. Therefore Work constantly; work, but be not attached; be not caught. Reserve unto yourself the power of detaching yourself from everything, however beloved, however much the soul might yearn for it, however great the pangs of misery you feel if you were going to leave it; still, reserve the power of leaving it whenever you want. The weak have no place here, in this life or in any other life. Weakness leads to slavery. Weakness leads to all kinds of misery, physical and mental. Weakness is death. There are hundreds of thousands of microbes surrounding us, but they cannot harm us unless we become weak, until the body is ready and predisposed to receive them. There may be a million microbes of misery, floating about us. Never mind! They dare not approach us, they have no power to get a hold on us, until the mind is weakened. This is the great fact: strength is life, weakness is death. Strength is felicity, life eternal, immortal; weakness is constant strain and misery: weakness is death.