As you are a noble...
The best out of these pieces of advice of mine are those which tell you to fear Allah, to concentrate and to confine yourself to the performance of those duties which have been made incumbent upon you by Him and to follow in the footsteps of your ancestors [The Holy Prophet (S) & Imam ‘Ali (a)] and your pious and virtuous relationship.
Verily, they always carefully measured their thoughts and deeds, as you must also try to do and they carefully thought over the subject before saying anything about it or before doing a deed. You should also follow the same. This kind of deliberation made them take from life what was really the best and forsake that which was not made incumbent upon them or which was not the best.
If your mind refuses to accept my advice and you persist to try your own experiments like them then you are at liberty to arrive at your conclusions but only after thoroughly studying the subject and after acquiring the knowledge necessary for such decisions. You must not allow uncertainties and doubt to poison your mind, scepticism or irrational likes and dislikes should not affect your views.
But remember that before you start thinking and deliberating over a problem seek guidance from the Lord and beseech Him to give you a lead in the right direction. Avoid confusion in your ideas, and do not let disbelief take hold of your mind because the first will lead you to agnosticism and the others towards errors and sins.
When you are thus prepared to solve any problem and you are sure that you possess a clear mind, a sincere and firm desire to reach the truth, to say the correct thing and to do the correct deed, then carefully go through the advice that I am leaving for you. If your mind is not clear and it is not as free from doubts as you wish it to be, then you will be wandering in the wilderness of uncertainties and errors like a camel suffering from night blindness.
Under these circumstances, it is best for you to give up the quest because with such limitations none can ever reach the truth. My dear son! carefully and very carefully remember these sayings of mine. The Lord who is the Master of death is also the Master of life. The Creator is the Annihilator.