Bismillahir Rahmanir Rahim. Alhamdulillahi rabbil-'alamin. Was-Salatu was-Salam 'ala Sayyidina wa Azimina, Wa Habibi Qulubina wa Shafii Nufusina, Abul Qasim Muhammad. Wa 'ala Ahli Bayti tayyibina tahireen.
Can Islam be proven to any human being using logic only?
This question consists of two parts.
- Can Islam be proven (at all whether using logic only or otherwise)?
- To any human being?
1. Can Islam be proven?
Yes. Islam can be proven. Infallible Prophets, Messengers and Imams are Hujjah (proof) of Allah upon creation, along with Ayat (signs). Anything related to Islam can be proven with them.
2. To any human being?
This is where problem lies. It depends on one's intellect. The answer is Islam can be proven only to those who use best of his A’ql (intellect) and purify himself from Jahiliyya (Ignorance). A’ql and Jahiliyya are opposite concepts. They are antipodes of each other. A’ql is assistant in recognizing truth (proof) where as Jahiliyya is obstacle. So Islam can be proven to those who use A'ql (intellect) and cannot be proven to those who are Jahil (ignorant).
Imam Abu Al-Hassan Musa Bin Ja’far (as) said following (in a long Hadith)
...Allah (azwj) did not Send His (azwj) Prophets (as) and His (azwj)
Rasools (as) to His (azwj) servant except that they (as) would be
using their (as) intellects about Allah (azw)...
Al Kafi V 1 - Part1 (Page 13)
In fact, so called test of human life in this Dunya is actually test of his A’ql (intellect).
(It has been narrated) from Abu Ja’far (Imam Al-Baqir) (asws) having
said: ‘When Allah (azwj) Created the ‘Aql – intellect, He (azwj)
Interrogated it, then Said to it: “Come!” So it came. Then Said to it:
“Turn back!” So it turned back. Then He (azwj) Said: “By My (azwj)
Might and My (azwj) Majesy! I (azwj) did not Create any creature which
is more Beloved to Me (azwj) than you, nor will I (azwj) Perfect you
except among the ones whom I (azwj) Love. But, it is (based on) you
that I (azwj) shall Command, and for you I (azwj) shall Forbid, and
for you I (azwj) shall Punish, and for you I (azwj) shall Reward”’.
Al Kafi V 1 - Part1 (Page 3)