Do not dispute with anyone in any matter as far as possible. For in argumentation lies much harm and its evil is greater than its benefit.

Men have such a good opinion of themselves, of their mental superiority and intellectual depth; they believe themselves so skilled in discerning the true from the false, the path of safety from those of error, that they should be forbidden as much as possible the perusal of philosophic writings.

This visible world is a trace of that invisible one and the former follows the latter like a shadow.

Know, O beloved, that man was not created in jest or at random, but marvelously made and for some great end. Although he is not form everlasting, yet he lives for ever; and though his body is mean and earthly, yet his spirit is lofty and divine

When you have a bad suspicion about a Muslim in your heart, you should increase your consideration toward him and make dua for him. This way you will infuriate Satan and will be able to drive him away. Because of this, Satan will be reluctant to put evil thoughts into your heart, afraid that you would increase your consideration towards your brother and will make dua for him again.

Do not allow your heart to take pleasure with the praises of people, nor be saddened by their condemnation.

If your busy with yourself now, you will be busy with yourself then. If you are busy with Allah now, you will be with Him then.