Chasidut zu Wajikra 18:4

Leviticus 18,4. “you shall observe My social laws and ‎My statutes you shall guard carefully;” the “statutes” are ‎the commandments in the Torah concerning which the Torah did ‎not reveal why the Creator has commanded that we observe ‎them, neither do they commend themselves to our intellect. We ‎must remember that the true test of a Jew’s belief in G’d is if and ‎how he observes these statutes. If he keeps these statutes ‎meticulously he thereby refines his character. If one chooses to ‎perform only those commandments for which the Torah has ‎either provided a rationale, or concerning which we think that ‎we understand what G’d had in mind when He decreed them, one ‎demonstrates thereby that he does not have any intellect at all, ‎i.e. he will not even understand the true reason behind ‎commandments that he has chosen to observe. This is the true ‎meaning of the line: ‎את חקותי תשמרו‎. The Torah promises that if ‎we observe the statutes without knowing their reason our reward ‎will be that we will truly understand the ‎משפטים‎, the rules that ‎appear first and foremost to address themselves to the relations ‎between man and his fellow man. When the Torah wrote (18,5) ‎אשר יעשה אתם האדם וחי בהם‎, “which man is to perform in order ‎that he may live through them,” it alludes to this effect of ‎performing those commandments that we cannot understand..‎