Although I, the Supreme Lord, can never be captured by ordinary sense perception, those situated in human life may use their intelligence and other faculties of perception to directly search for Me through both apparent and indirectly ascertained symptoms.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अत्र मां मार्गयन्त्यद्धा युक्ता हेतुभिरीश्वरम् । गृह्यमाणैर्गुणैर्लिङ्गैरग्राह्यमनुमानतः
atra māṃ mārgayantyaddhā yuktā hetubhirīśvaram | gṛhyamāṇairguṇairliṅgairagrāhyamanumānataḥ
SB 11.7.23