What the enemy allows to us and praises in us, must be bad for us. Erich Ludendorff
Assuming that the particle has an internal vibration which allows to assimilate it to a small clock, I supposed that the clock was traveling with the wave in such a way that its internal vibration remained constantly in phase with the wave's : this is the phase matching postulate. Louis de Broglie
May God make us amongst those he allows to do good, and to practice it, and those who see the right path as none of us is without weakness; whosoever sees his weakness will forget those of others. May God make us die in the faith of Muhammad. Amen, Oh Master of the Universes. Ibn Hazm
He who judges others and never allows to be judged looses friends. African Proverb