The Sufi avoids all unrhythmic actions; he keeps the rhythm of his speech under the control of patience, not speaking a word before the right time, not giving an answer until the question is finished. He considers a contradictory word a discord unless spoken in a debate, and even at such times he tries to resolve it into a consonant chord. A contradictory tendency in man finally develops into a passion, until he contradicts even his own idea if it be propounded by another.