A materialist, his intelligence perverted by the action of his deceptive senses, cannot recognize You at all, although You are always present within his own senses and heart and also among the objects of his perception. Yet even though one’s understanding has been covered by Your illusory potency, if one obtains Vedic knowledge from You, the supreme spiritual master of all, he can directly understand You.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यं वै न वेद वितथाक्षपथैर्भ्रमद्धीः सन्तं स्वकेष्वसुषु हृद्यपि दृक्पथेषु । तन्माययाऽऽवृतमतिः स उ एव साक्षा- दाद्यस्तवाखिलगुरोरुपसाद्य वेदम्
yaṃ vai na veda vitathākṣapathairbhramaddhīḥ santaṃ svakeṣvasuṣu hṛdyapi dṛkpatheṣu | tanmāyayā''vṛtamatiḥ sa u eva sākṣā- dādyastavākhilagurorupasādya vedam
SB 12.8.48